diethyl 2-phenylethyl phosphonate
Also known as: 2-diethoxyphosphorylethylbenzene, diethyl phenethylphosphonate, phenethyl-phosphonic acid diethyl ester, Phenaethyl-phosphonsaeure-diaethylester, Phosphonic acid, P-(2-phenylethyl)-, diethyl ester
diethyl 2-phenylethyl phosphonate (CAS 54553-21-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H19O3P and a molecular weight of 242.25100 g/mol. Key properties include a boiling point of 125ºC/0.25 mmHg(lit.), a density of 1.054 g/mL at 25ºC(lit.) and a flash point of 110ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 54553-21-8
- Jingsj CID
- J-16698-3
- Molecular Formula
- C12H19O3P
- Molecular Weight
- 242.25100 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 125ºC/0.25 mmHg(lit.) |
|---|---|
| Density | 1.054 g/mL at 25ºC(lit.) |
| Flash Point | 110ºC |
| Exact Mass | 242.10700 |
| PSA | 45.34000 |
| LogP | 3.49520 |
| Refractive Index | n20/D 1.495(lit.) |
Customs & Trade Information
| HS Code | 2931900090 |
|---|---|
| Summary | 2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of diethyl 2-phenylethyl phosphonate?
The CAS number of diethyl 2-phenylethyl phosphonate is 54553-21-8.
What are the molecular formula and molecular weight of diethyl 2-phenylethyl phosphonate?
diethyl 2-phenylethyl phosphonate has molecular formula C12H19O3P and molecular weight 242.25100 g/mol.
What are the upstream and downstream products of diethyl 2-phenylethyl phosphonate?
For diethyl 2-phenylethyl phosphonate, Upstream Products: diethyl (chloromethyl)phosphonate, 9-Benzyl-9-borabicyclo[3.3.1]nonane, Diethyl methylphosphonate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "diethyl 2-phenylethyl phosphonate (CAS 54553-21-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16698-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.